On Tue, 22 May 2012 09:33:14 -0700 (PDT), Bob La Londe
wrote:

Is there a quick way to square a swivel vise to the direction of
travel? I can get moderately close with a piece of paper and a piece
of precision rod stock. To get closer I have to cut something and use
a depth gage of some type horizontally to measure the difference from
one end to the other.

How about about tightening it down without it moving? I just tighten
a little and paper it. Then a little more and paper it again, etc, to
the point where I have to make final adjustments with a deadblow
hammer.
snip
==============
Assuming this isn't a troll, this is what test (not drop,
although you can use with suitable holder) indicators were
developed for.

For some examples (there are many others and your local mill
supply should stock) see

http://www.use-enco.com/CGI/INSRIT?P...PARTPG=INLMK32

http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3

you will also need a mounting kit

http://www.use-enco.com/CGI/INPDFF?PMPAGE=343&PMCTLG=00

One useful trick is to lightly clamp a parallel in the vise
and indicate off this as the additional length will
"amplify" any out of square condition for the test indicator
to measure.

http://www.use-enco.com/CGI/INPDFF?P...PARTPG=INLMK32

a large HSS lathe tool bit can also be used and may be
cheaper.

http://www.wttool.com/index/page/pro...+Bits+%28WT%29


--
Unka' George

"Gold is the money of kings,
silver is the money of gentlemen,
barter is the money of peasants,
but debt is the money of slaves"

-Norm Franz, "Money and Wealth in the New Millenium"